Billy Joel is postponing his Tuesday night concert in New York City because of a viral infection.

His spokesperson said in a statement Monday that doctors are forcing the 68-year-old singer to postpone his concert at Madison Square Garden. Ticketholders for the Tuesday show will be able to see Joel at MSG on Dec. 20.

The statement reads: “Billy understands that this is an inconvenience for ticket holders and apologizes for re-scheduling on such short notice.”

Joel has been performing shows at MSG once a month since 2014. In 2015 he set a record for most performances by a single artist at MSG.